12-digit business calculator is perfect for the home or office. Features an extra large, easyt-to-read angled LCD display. This calculator is engineered with an Antimicrobial agent to reduce the growth of microbes and bacteria that can cause discoloration and odors. Manufactured with recycled plastic. Cost/sell/margin keys for quick and easy profit calculations (enter two variables and the third automatically appears). Other functions include: item count, selectable decimal and rounding slide switches, backspace key, percent key, square root key, change sign key, 3-key independent memory, and automatic constants. Operates on hybrid power (solar with battery backup). Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 12; Memory: 3-Key.